Grainger stocks hundreds of extra long drill bits to help with high performance deep-hole drilling in metal, wood and plastic. An extension drill with parabolic flute design helps provide optimal coolant flow and fast chip removal that can lead to higher feed rates. Extra long drill bits with a split-point tip can deliver nonslip starting in very hard materials. When you need an aircraft drill or other type of extra long drill bit, count on Grainger to carry it. Shop now!